連続した都市ストリートキヤニオン空間の形態と大気安定度が流れと拡散に与える影響に関するCFD解析 ストリートキヤニオン空間の流れと拡散に関する研究　その1

摘要

本研究は連続した都市のストリートキャニオン空間を仮定し，そ の空間において建物の配置や建物の高さに変化を与え，CFD解析に た。これにより以下の結論を得た。%This research is focused on the wind characteristics and the ventilation performance in the consecutive street canyon using CFD (Computational Fluid Dynamics) analysis. In order to achisve the CFD analysis of the consecutive street canyon, the cyclic boundary condition was set To estimate die effects of complex of building and atmospheric stability on ventilation performance, 4 cases varying building height and arrangement and 3 cases with various atmospheric stability were conducted. In order to obtain the performance of ventilation of pedestrian space with urban street canyon, pollutants were released in the regbn under 7.5m high. Furthermore, ventilation rate and PFR (Purging Flow Bate) were calculated from the result of each case. Mweover, the ventilation efficiency in canyon was analyzed how ventilation performance is influenced by the form of canyon and the various atmospheric stabilities has been studied.